Wired has an interesting story about a new 26-story tower soon to be built in Chicago’s Hyde Park called Windermere West. The building was designed by Jeanne Gang, with a little help from Arup. Here’s the idea: the hottest sun of the year is the highest in the sky and this is when electricity bills skyrocket. So, Gang designed this sawtooth facade effect for roughly 2/3 of the south-facing balconies. At a 71 degree tilt, the glass is angled enough to shade the interiors during that hot period of the day, but not so much that people feel like they will tip over into the streets. Pretty neat?! I wonder if this is actually going to get built. It’s interesting to see how architects come up with creative solutions to incorporating natural light in just the right way.

::"S2" is short for "Skyscraper Sunday," a weekly article on green skyscrapers posted every Sunday::